Lone Pine Landfill, Evaluation Monitoring Work Plan … · Lone Pine Landfill, Evaluation Monitoring Work Plan June 2009 Carlton Project 5616-04-08 2 Boring logs from the 1989 drilling

Lone Pine Landfill, Evaluation Monitoring Work Plan June 2009

Carlton Project 5616-04-08 1

1.0 INTRODUCTION

Carlton Engineering, Inc. has prepared this Evaluation Monitoring Work Plan (Work Plan)summarizing the field and analytical activities to be conducted in order to start Evaluation Monitoring atthe Lone Pine Landfill. The Regional Water Quality Control Board – Lahontan Region (RWQCB) hasoversight of the landfill and this Work Plan is intended to comply with the Waste DischargeRequirements (WDRs) for the landfill issued by the RWQCB (Adopted Board Order No. 6-95-70A1,WDID No. 6B140300006); specifically finding 15, and Requirements and Prohibitions Section Caddressing Evaluation Monitoring. The Work Plan is prepared in response to verification of a low-levelrelease of volatile organic compounds from the landfill as detected in two of the site’s down gradientmonitoring wells. Groundwater monitoring and reporting is currently being conducted in accordancewith the Monitoring and Reporting Program (MRP No. 95-70).

A description of the evaluation rationale, and location, drilling methods for installation and development,and sampling protocol for two new monitoring wells at the landfill site is provided in this Work Plan.

The Work Plan includes the following

Site information

Drilling details

Monitoring well design

Well development details

Well survey details

Groundwater Sampling and Analysis Plan (SAP) – provided as Appendix A

Execution Schedule

2.0 SITE SETTING

2.1 LocationThe location of the landfill facility is approximately two miles southeast of the town of Lone Pine,California, in Inyo County (refer to Figures 1 and 2 for location and site maps). The landfill is developedon land leased by the County of Inyo from the Los Angeles Department of Water and Power (DWP). Thesite receives approximately 9,035 tons of waste annually, of which approximately 51% or 4640 tons isrecycled and diverted (reported data from 2008).

2.2 TopographyThe ground slope in the immediate vicinity of the Lone Pine landfill trends northeast towards the OwensRiver at approximately a 2 percent grade. Depth to groundwater is approximately 30 feet below groundsurface (bgs). Groundwater generally flows toward the Owens River, which is approximately ¼ mile tothe east. Ground surface elevations range from approximately 3674 feet (area of MW-1) to 3640 feet(area north of MW-4) above mean sea level (msl). No rivers or creeks cross the landfill.

2.3 GeologyThe geology of the site is mapped as Quaternary lake deposits (Ql) as shown on the Geologic Map ofCalifornia, Fresno Sheet (Matthews and Burnett, 1965). The mapped unit is composed of lucustrine andfluviatile deposits of Owens Valley. The site is located on a shallow alluvial floodplain of gravel, sand, silt,and clay which slopes east towards the Owens River. Sections of sandy clay four to five feet thick arenoted in the stratigraphic profile of shallow soils around the site.



Boring logs from the 1989 drilling for the four existing monitoring wells at the site indicate the materialsfrom the ground surface to the depths of well completion (44 feet to 35 feet below the ground surface(bgs)) were described as fine grained sand, fine grained silt, silty sand, silty clay, sandy clay and clay.

2.4 HydrogeologyStatic groundwater level in the monitoring wells at the landfill site ranges from approximately 25 to 32feet below the ground surface or 3633 to 3649 feet msl. Elevation monitoring data collected and reportedsince 1999 indicates the groundwater flow direction in the vicinity of the landfill is generally toward theeast. Water levels have been observed to fluctuate seasonally by approximately 1 to 3 feet, and throughthe reported time span levels have had a maximum differential of approximately 6 feet.

Drilling logs indicate the first evidences of water were found in the silty clay, fine sand, and clayey siltencountered in the borings between 20 and 30 feet bgs. Considering the well borings did not passthrough materials typical of confining layers, the first encountered water zone is likely unconfined. Theborings were terminated in clay and sandy clay that may indicate the uppermost confining layer in thelandfill area.

2.5 Land UseThe property occupied by the landfill as well as the property surrounding the landfill, is owned by theLADWP. The land surrounding the facility is undeveloped and vacant.

3.0 CURRENT MONITORING PROGRAM

Groundwater monitoring data at the Lone Pine Landfill has been conducted quarterly since 1999 forconstituents listed in MRP No. 95-70. The four monitoring wells on the site were installed in 1989 aspart of the Solid Waste Assessment Test requirements instituted for landfills throughout the state. WellMW-1 is located in the up gradient direction from the landfill and wells MW-2, MW-3 and MW-4 arelocated down gradient from the active filling area of the facility.

The specifications of the current detection monitoring program are contained in the WDRs andassociated MRP. The Water Quality Protection Standard for the landfill consists of monitoringparameters, monitoring points, points of compliance and concentration limits. The monitoringparameters for the landfill are chloride, sulfate, nitrate as nitrogen, total dissolved solids (TDS) andvolatile organic compounds (VOCs) as referenced in the WDRs. Wells MW-2, MW-3 and MW-4 arethe points of compliance at the site. Well MW-1 is considered the background monitoring point. Theexisting well locations are indicated on Figure 2. Regulatory concentration limits for all VOCs areconsidered to be the laboratory detection limit. Regulatory concentration limits have not beendetermined for inorganic parameters.

VOCs have been detected at concentrations near or below the laboratory’s Practical Quantitation Limitsconsistently in monitoring well MW-2 since the first quarter of 2003 monitoring event. VOCs have beendetected consistently in monitoring well MW-3 since the first quarter of 2003 monitoring event. MW-1and MW-4 have had sporadic detections near the laboratory Practical Quantitation Limits. The VOCsanalysis results for the site wells’ samples from the first quarter of 2003 through the last quarter of 2008are summarized on the attached Table 1. The consistent presence of three VOC constituents isconsidered as evidence for verification of a low-level release from the landfill.

The landfill is unlined and there is no leachate collection and removal system in place; therefore noleachate monitoring is conducted. Based on studies at similar sites in the Owens Valley (Bishop-SunlandLandfill), leachate does not appear to be a contributor to groundwater contamination because of the low



annual rainfall totals (approximately 5 inches) and high evapotranspiration rates (approximately 66inches).

There is no perennial surface water flow at the landfill and no surface water monitoring is required by theWDRs.

3.1 Current ImpactsDetections of volatile organic compounds were reported by the laboratory only in the sample collectedfrom well MW-3 during the fourth quarter of 2008. Tetrachloroethene, 1,1-Dichloroethane, andDichlorodifluoromethane were detected at concentrations slightly above the Practical QuantitationLimit (PQL, or reporting limit/method reporting limit), and Trichlorofluoromethane (CFC-11) wasdetected at a concentration above the PQL. Table 1 presents the VOC analysis report summary.

The WDRs require that monitoring data be evaluated, either by statistical or non-statistical methods, todetermine if a release has occurred from the landfill. For organic compounds, no analysis is necessarysince the confirmation of any organic compound at concentrations above the detection limit isconsidered evidence of a release from a landfill. Volatile organic compounds have been detected ingroundwater samples at the Lone Pine Landfill consistently in MW-2 and MW-3 since 2003. Thisindicates that groundwater may have been impacted by landfill gas when atmospheric changes occur orfrom the migration of VOCs through the landfill to the groundwater.

4.0 EVALUATION MONITORING

In accordance with Revised Waste Discharge Requirements, Board Order No. 6-95-70, finding 15 -Evaluation Monitoring, and Requirements and Prohibitions section C - Evaluation Monitoring Program,and with the Monitoring and Reporting Program No. 95-70 section IV Reporting Requirements, sectionB 2 - Evaluation Monitoring, this Work Plan proposes installation of two additional monitoring wells toconduct evaluation monitoring regarding the apparent release of VOCs to the groundwater below thelandfill.

4.1 Work Plan RequirementsThis Work Plan is prepared to provide information regarding the mechanisms to be used for EvaluationMonitoring at the site. Two additional groundwater monitoring wells are proposed for constructiondown gradient from the landfill to the east and southeast of the existing down gradient monitoring wellsinstalled in 1989. The new wells are intended to yield data necessary to evaluate the extent of the lateraland vertical migration of the low levels of VOCs consistently detected in one of the site’s down gradientwells.

All monitoring wells shall comply with the appropriate standards as described in California WellStandards Bulletin 74-90 (June 1991) and Water Well Standards: State of California Bulletin 74-81(December 1981), and any more stringent standards adopted by the Discharger or County pursuant toCWC Section 13801.” This Work Plan provides the necessary details for installing the wells inaccordance with the standards and includes the information outlined in Section 1.0.

4.2 Monitoring Well LocationsThe proposed locations of the monitoring wells are presented on Figure 2. The proposed well locationshave been selected in consideration of the groundwater gradient direction observed through the past 10years of monitoring, and the contaminant detections reported in down gradient wells MW-2 and MW-3located near the southeastern and eastern portions of the active landfilling operations.



The Monitoring Well Summary table summarizes the function of each proposed monitoring well, thewell’s status, and the well diameter. Inyo County will be able to assess potential impacts to groundwaterquality from the landfill with data obtained from the two proposed groundwater monitoring wells.

Monitoring Well Summary

Well IDWell

StatusCasing

DiameterFunction

MW-05 Proposed 2”Down gradient monitoring of potential groundwater

quality impacts northeast of the current landfill

MW-06 Proposed 2”Down gradient monitoring of potential groundwater

quality impacts east of the current landfill

4.3 Groundwater Flow DirectionStatic groundwater elevations have been measured as part of the quarterly monitoring activitiesconducted at the site. Historical groundwater levels are recorded in Table 3 and displayed graphically onthe accompanying chart. A groundwater surface contour map generated from fourth quarter 2008 data isprovided as Figure 2.

Groundwater measurement data recorded on Table 3 indicate that the overall groundwater levels in thesite wells have lowered slightly since the late 1990s, and more recently have risen several feet above a lowpoint ob served in September 2005. Past and recent (fourth quarter 2008) water level measurementsindicate that groundwater movement is generally toward the east. The 2008 fourth quarter groundwatergradient was calculated at 0.014 ft/ft, as measured between MW-1 and MW-3. Groundwater velocity hasnot been calculated due to the lack of information regarding the hydraulic conductivity of the localaquifer.

5.0 DESCRIPTION OF FIELD TASKS

Figure 3 provides well construction details. Monitoring well specifications shall be in agreement withthe Department of Water Resources (DWR) California Well Standards Bulletin 74-90 (June 1991) andWater Well Standards: State of California Bulletin 74-81 (December 1981). Details of the monitoring welldesign, well development and groundwater sampling procedures are discussed in the following sections.All permits required by local regulatory agencies will be obtained prior to field work. California StateDWR Well Completion Reports will be prepared by the California licensed (C-57) well driller andsubmitted to the regulatory agencies.

5.1 Monitoring Well InstallationAs discussed in Section 3.1, there are currently four monitoring wells in the vicinity of the landfillcompleted within the first groundwater zone and the groundwater gradient or groundwater flowdirection has been observed to be toward the east/northeast. Monitoring wells will be bored deepenough to assure the wells will not go dry, yet no greater than the bottom of the uppermost aquifer. Theborings will be six to eight inches in diameter and be completed using HSA drilling, based on previousexperience at the site with subsurface work. Total well depths may range from 34-44 feet in depth basedon first groundwater elevations. The total depth of the wells and exact locations will be fielddetermined. Investigative derived waste will be spread on site.



The Unified Soil Classification System (USCS) and geologic descriptions will be used to classify thesubsurface materials encountered during drilling and continuously log the borings. Descriptions willinclude moisture content, relative density, cementation, grain size and maximum particle size, formationname (as appropriate) and composition. Information from the boring logs will be used to determine thescreen interval and groundwater elevation. The screen will be placed in the uppermost aquifer. A staticwater level measurement from the ground surface will be made once completion depth has been reached.No soil samples will be collected and therefore no laboratory analysis will be conducted.

Monitoring wells will be constructed using 2-inch Schedule 40 PVC flush-threaded casing and 0.020-inch screen slot size. Screen length will be 10-15 feet depending on borehole geologic conditions. Athreaded end cap will be fitted to the lowermost section of the casing. Blank casing will extendapproximately 2 feet above ground surface level for completion inside a monument riser.

Annular materials will be installed during casing installation. The filter pack will be No.3 Montereysilica sand or equivalent. Baroid bentonite chips, or similar, will comprise the bentonite seal and thegrout seal will be Portland Type II cement with 3-5 percent Baroid Quick-Gel bentonite.

Materials will be installed slowly and carefully, to avoid bridging during placement. Depending on thefinal drilling depth and formation composition, construction materials may require placement using atremie pipe. The specific volume of each material type used will be calculated in the field. The filter packwill be installed a minimum of 2 feet above the top of the well screen to allow for settling duringdevelopment. Two feet of #60 sand will be placed on top of the filter pack to prohibit the bentonite sealfrom infiltrating into the filter pack.

Approximately 3 feet of bentonite will be installed above the filter pack. The bentonite seal will beallowed to hydrate for approximately two hours before the installation of the grout seal. The grout sealwill be poured to the ground surface and around an 8-inch diameter steel protective casing. Theprotective casing with locking lid will encapsulate the monitoring wellhead and extend above the PVCblank.

Prior to the initial monitoring event, a top of casing survey will be prepared by a survey crew andCalifornia licensed Land Surveyor to establish the location and elevation of the top of casing. Eachmonitoring well horizontal location will be surveyed to within 0.1 foot based on NAD-83. Eachmonitoring well vertical survey point will be recorded on the north side of the monitoring well casing topand recorded to within 0.01 foot based on NGVD-29. All future groundwater depth measurements willbe made from the north side of the top of casing of each well.

5.2 Monitoring Well DevelopmentGroundwater monitoring wells will be developed following 48 hours of completion in agreement withThe California Environmental Protection Agency’s Requirements for Monitoring Well Installation Work Plansand Monitoring Well Installation Reports. Well development follows the drilling of the wells, which cleans thescreen and filter pack of drill cuttings and attempts to restore the natural hydraulic properties of theformation. Approximately 10 times the volume of water in the casing will be withdrawn, if possible.Water can be withdrawn from the well by means of a bailer or a pump with surging. If the aquifer isslow to recharge, development will continue until recharge is too slow to practically continue. Asdiscussed in Section 5.1, wells will not be constructed without an appropriate amount of water in theboring.

Coarse sand sized material will be removed from the bottom of the well using a bailer. After bailing, thescreen section will be swabbed using a surge block until the water becomes visibly clear. Water qualityparameters, including pH, temperature, specific conductance and turbidity will be measured during



development. Development will continue via pumping or bailing until the turbidity is 10 NTU orquality parameters have stabilized to within 10%.

5.3 Well SamplingSampling and analysis of the new monitoring wells will be conducted in accordance with the followingMonitoring Parameters that are also indicated in MRP No. 95-70. The parameters/constituents that willbe monitored include:

Volatile Organic CompoundsDepth to Groundwater/Static Water LevelElectrical ConductivitypHTemperatureTurbidity

Considering an apparent release of VOCs to the groundwater below the landfill, analysis of groundwatersamples collected from the proposed down gradient wells for VOCs (EPA Method 8260) will beconducted. Well sampling and analysis is addressed in the Sampling and Analysis Plan attached inAppendix A

6.0 SCHEDULE

Upon RWQCB approval of this Work Plan, scheduling of a drilling subcontractor will commence. Ascope of work for monitoring well construction will go out to bid.

Well development will be completed following a 48-hour period after installation. After wellcompletion, the groundwater monitoring wells can then be surveyed and subsequently sampled.Quarterly groundwater quality monitoring including the new wells in the existing monitoring programwill be completed in accordance with MRP No. 95-70. An Evaluation Monitoring Report will beprepared following the regularly scheduled quarterly sampling including the new wells. Field Activitiesand well construction information will be detailed in the Evaluation Monitoring Report.


Carlton Project 5616-04-08

FIGURES & TABLES

Figure 1 – Location MapFigure 2 – Site Map and Proposed Well Locations

Figure 3 – Well Construction DetailsTable 1 – Volatile Organic Compound Analysis Summary

Table 2 – Static Groundwater ElevationsStatic Groundwater Elevations Chart

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0.5 0.5 0.5 0.5 0.5 0.5 1 1 0.5 0.5 0.5 0.5 0.5mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

MW-1 0.33 (J) 0.43 (J)

MW-2 0.37 (J)

MW-3 0.84 0.24 (J) 0.38 (J) 3.9MW-4

MW-1

MW-2 0.12 (J) 0.16 (J) 0.48 (J)

MW-3 0.45 (J) 0.43 (J) 0.31 (J) 3.2MW-4

MW-1

MW-2 0.34 (J) 0.98

MW-3 0.73 0.29 (J) 0.48 (J) 0.37 (J) 4.4MW-4

MW-1

MW-2 0.22 (J) 0.14 (J) 0.19 (J) 0.7

MW-3 0.52 0.31 (J) 0.07 (J) 0.41 (J) 0.32 (J) 3.8MW-4

MW-1

MW-2 0.33 (J)

MW-3 0.39 (J) 0.59 0.37 (J) 4.5MW-4

MW-1

MW-2 0.18 (J) 0.15 (J) 0.41 (J)

MW-3 0.48 (J) 0.3 (J) 0.22 (J) 0.52 0.32 (J) 3MW-4

MW-1

MW-2 0.19 (J) 0.38 (J) 0.13 (J) 0.74

MW-3 0.49 (J) 0.4 (J) 0.7 0.35 (J) 4.6MW-4

MW-1 0.22 (J)

MW-2 0.42 (J) 0.25 (J) 0.42 (J) 0.42 (J) 0.94

MW-3 0.81 0.41 (J) 0.2 (J) 0.73 0.33 (J) 3.8MW-4

MW-1

MW-2 0.20 (J) 0.23 (J) 0.16 (J) 0.29 (J) 0.61

MW-3 0.54 0.42 (J) 0.17 (J) 0.64 0.27 (J) 3.5MW-4

MW-1

MW-2 0.21 (J) 0.20 (J) 0.17 (J) 0.51

MW-3 0.47 (J) 0.33 (J) 0.5 2.3MW-4

Second Quarter

2005

First Quarter

2003

Monitoring

Period

Monitoring

Well

Third Quarter

2003

Fourth Quarter

2003

First Quarter

2004

Second Quarter

2003

TABLE 1

VOLATILE ORGANIC COMPOUND ANALYSIS SUMMARY

FIRST QUARTER 2003 THROUGH FOURTH QUARTER 2008

LONE PINE LANDFILL

Parameter

EPA Method 8260

PQL 1

Units

Second Quarter

2004

Third Quarter

2004

Fourth Quarter

2004

First Quarter

2005

Page 1 of 3

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Monitoring

Period

Monitoring

Well

TABLE 1



LONE PINE LANDFILL

Parameter

EPA Method 8260

PQL 1

Units

MW-1

MW-2 0.32 (J) 0.35 (J) 0.52 1.2

MW-3 0.50 0.39 (J) 0.59 0.24 (J) 3.2MW-4

MW-1

MW-2

MW-3 0.68 3.9MW-4

MW-1

MW-2 0.22 (J) 0.32 (J) 0.65

MW-3 0.57 0.41 (J) 0.67 0.20 (J) 3.2MW-4

MW-1

MW-2

MW-3 0.7 2.7MW-4

MW-1

MW-2 0.57

MW-3 1.1 0.66 2.6MW-4 1.4 0.61

MW-1

MW-2

MW-3 0.72 2.1MW-4

MW-1

MW-2 0.13 (J) 0.19 (J) 0.32 (J) 0.31 (J)

MW-3 0.41 (J) 0.47 (J) 0.18 (J) 0.72 2.0MW-4

MW-1

MW-2 0.10 (J) 0.16 (J) 0.18 (J) 0.25 (J) 0.36 (J)

MW-3 0.12 (J) 0.31 (J) 0.49 (J) 0.14 (J) 0.64 1.8MW-4

MW-1

MW-2 0.30 (J) 0.28 (J) 0.44 (J) 0.72

MW-3 0.51 0.53 0.18 (J) 0.72 2.1MW-4

MW-1

MW-2 0.25 (J) 0.27 (J)

MW-3 0.42 (J) 0.5 0.16 (J) 0.72 1.8MW-4

Third Quarter

2005

Fourth Quarter

2005

First Quarter

2006

Third Quarter

2006

Second Quarter

2006

Fourth Quarter

2006

First Quarter

2007

Second Quarter

2007

Third Quarter

2007

Fourth Quarter

2007

Page 2 of 3

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Monitoring

Period

Monitoring

Well

TABLE 1



LONE PINE LANDFILL

Parameter

EPA Method 8260

PQL 1

Units

MW-1

MW-2

MW-3 0.47 (J) 0.68 0.88 1.9MW-4

MW-1

MW-2 0.14 (J) 0.39 0.38 (J)

MW-3 0.48 (J) 0.69 1.10 2MW-4

MW-1

MW-2 0.14 (J) 0.46 (J) 0.29 (J) 0.32 (J)

MW-3 0.46 (J) 0.36 (J) 0.45 (J) 0.73 0.46 ((J) 0.95 0.21 (J) 1.9MW-4 0.38 (J)

MW-1

MW-2

MW-3 0.60 0.66 0.86 1.6MW-4

1 PQL: Practical Quantitation Limit is the laboratory reporting limit for the given matrix, analyte and test method

Blank cell indicates no reported detection

Third Quarter

2008

Note: Values indicated with a J-flag indicate a trace level compound below the laboratory PQL and above the MDL

Only the analytes detected are listed

First Quarter

2008

Second Quarter

2008

Fourth Quarter

2008

Page 3 of 3

Well ID Measurement Date

Wellhead Elevation

(feet MSL)

Depth to Ground Water

(feet)

Ground Water Elevation

(feet MSL)

03/16/99 23.89 3650.85

10/19/99 22.87 3651.87

12/14/99 22.86 3651.88

03/21/00 22.31 3652.43

06/15/00 22.75 3651.99

09/15/00 23.31 3651.43

12/18/00 23.41 3651.33

03/14/01 25.44 3649.30

06/05/01 23.49 3651.25

08/29/01 26.12 3648.62

11/13/01 26.71 3648.03

02/05/02 26.61 3648.13

05/13/02 26.66 3648.08

08/01/02 27.02 3647.72

11/13/02 27.10 3647.64

02/05/03 27.01 3647.73

05/07/03 26.95 3647.79

08/06/03 27.42 3647.32

11/05/03 27.63 3647.11

02/10/04 27.46 3647.28

05/05/04 27.53 3647.21

08/04/04 27.91 3646.83

11/10/04 27.95 3646.79

02/09/05 27.47 3647.27

05/04/05 27.49 3647.25

09/07/05 28.12 3646.62

12/21/05 26.52 3648.22

03/21/06 27.33 3647.41

05/10/06 27.31 3647.43

08/16/06 27.57 3647.17

11/15/06 27.34 3647.40

02/27/07 26.84 3647.90

05/23/07 26.8 3647.94

08/13/07 27.15 3647.59

11/28/07 27.28 3647.46

02/26/08 24.73 3650.01

06/04/08 24.86 3649.88

08/18/08 25.41 3649.33

11/12/08 25.65 3649.09

MW-1 3674.74

TABLE 2

STATIC GROUND WATER ELEVATIONS

LONE PINE LANDFILL


Notes

Static ground water levels for second quarter 1999 not available

MSL: Mean Sea Level


Wellhead Elevation

(feet MSL)


(feet)


(feet MSL)

TABLE 2


LONE PINE LANDFILL


03/16/99 28.20 3643.81

10/19/99 27.22 3644.79

12/14/99 26.83 3645.18

03/21/00 26.35 3645.66

06/15/00 26.58 3645.43

09/15/00 26.89 3645.12

12/18/00 27.19 3644.82

03/14/01 29.13 3642.88

06/05/01 27.02 3644.99

08/29/01 29.52 3642.49

11/13/01 30.81 3641.20

02/05/02 30.18 3641.83

05/13/02 30.14 3641.87

08/01/02 30.34 3641.67

11/13/02 30.59 3641.42

02/05/03 30.49 3641.52

05/07/03 30.38 3641.63

08/06/03 30.68 3641.33

11/05/03 30.92 3641.09

02/10/04 30.85 3641.16

05/05/04 30.84 3641.17

08/04/04 31.10 3640.91

11/10/04 31.29 3640.72

02/09/04 31.08 3640.93

05/04/05 30.95 3641.06

09/07/05 31.39 3640.62

12/21/05 29.33 3642.68

03/21/06 30.97 3641.04

05/10/06 30.89 3641.12

08/16/06 31.23 3640.78

11/15/06 31.21 3640.80

02/27/07 30.77 3641.24

05/23/07 30.58 3641.43

08/13/07 30.70 3641.31

11/28/07 28.62 3643.39

02/26/08 28.38 3643.63

06/04/08 28.38 3643.63

08/18/08 28.45 3643.56

11/12/08 29.04 3642.97

3672.01MW-2

Notes


MSL: Mean Sea Level


Wellhead Elevation

(feet MSL)


(feet)


(feet MSL)

TABLE 2


LONE PINE LANDFILL


03/16/99 32.58 3633.62

10/19/99 30.97 3635.23

12/14/99 30.37 3635.83

03/21/00 30.19 3636.01

06/15/00 30.55 3635.65

09/15/00 30.98 3635.22

12/18/00 30.91 3635.29

03/14/01 33.02 3633.18

06/05/01 30.89 3635.31

08/29/01 33.58 3632.62

11/13/01 34.20 3632.00

02/05/02 34.06 3632.14

05/13/02 34.06 3632.14

08/01/02 34.40 3631.80

11/13/02 34.52 3631.68

02/05/03 34.32 3631.88

05/07/03 34.21 3631.99

08/06/03 34.71 3631.49

11/05/03 34.88 3631.32

02/10/04 34.65 3631.55

05/05/04 34.68 3631.52

08/04/04 35.11 3631.09

11/10/04 35.22 3630.98

02/09/04 34.82 3631.38

05/04/05 34.75 3631.45

09/07/05 35.41 3630.79

12/21/05 32.50 3633.70

03/21/06 34.48 3631.72

05/10/06 34.72 3631.48

08/16/06 35.25 3630.95

11/15/06 35.09 3631.11

02/27/07 34.41 3631.79

05/23/07 34.39 3631.81

08/13/07 34.67 3631.53

11/28/07 34.64 3631.56

02/26/08 31.91 3634.29

06/04/08 32.01 3634.19

08/18/08 32.36 3633.84

11/12/08 32.56 3633.64

MW-3 3666.20

Notes


MSL: Mean Sea Level


Wellhead Elevation

(feet MSL)


(feet)


(feet MSL)

TABLE 2


LONE PINE LANDFILL


03/16/99 32.75 3635.03

10/19/99 31.51 3636.27

12/14/99 30.98 3636.80

03/21/00 30.62 3637.16

06/15/00 31.22 3636.56

09/15/00 31.65 3636.13

12/18/00 31.34 3636.44

03/14/01 32.86 3634.92

06/05/01 31.49 3636.29

08/29/01 33.83 3633.95

11/13/01 34.13 3633.65

02/05/02 33.84 3633.94

05/13/02 33.95 3633.83

08/01/02 34.57 3633.21

11/13/02 34.33 3633.45

02/05/03 34.07 3633.71

05/07/03 34.03 3633.75

08/06/03 34.75 3633.03

11/05/03 34.74 3633.04

02/10/04 34.32 3633.46

05/05/04 34.50 3633.28

08/04/04 35.18 3632.60

11/10/04 34.97 3632.81

02/09/04 34.51 3633.27

05/04/05 34.59 3633.19

09/07/05 35.53 3632.25

12/21/05 32.86 3634.92

03/21/06 34.74 3633.04

05/10/06 34.54 3633.24

08/16/06 35.38 3632.40

11/15/06 34.94 3632.84

02/27/07 34.27 3633.51

05/23/07 34.30 3633.48

08/13/07 34.72 3633.06

11/28/07 32.38 3635.40

02/26/08 32.01 3635.77

06/04/08 32.22 3635.56

08/18/08 32.91 3634.87

11/12/08 32.67 3635.11

3667.78MW-4

Notes


MSL: Mean Sea Level

Static Groundwater ElevationsLone Pine Landfill Monitoring Wells

1999 - 4Q2008

3620.00

3625.00

3630.00

3635.00

3640.00

3645.00

3650.00

3655.00

3660.00

3665.00

Feb-99

Jul-99

Dec-99

May-00

Oct-00

Mar-01

Aug-01

Jan-02

Jun-02

Nov-02

Apr-03

Sep-03

Feb-04

Jul-04

Dec-04

May-05

Oct-05

Mar-06

Aug-06

Jan-07

Jun-07

Nov-07

Apr-08

Sep-08

Date

Gro

und

Wat

erE

leva

tion

(fee

tMSL

)

MW-1

MW-2

MW-3

MW-4


Carlton Project 5616-04-08

APPENDIX A

Sampling and Analysis Plan

Carlton Project No. 5616-04-08 1

Sampling and Analysis Plan

This sampling and analysis plan (SAP) is intended to document the procedural and analyticalrequirements for semi-annual groundwater monitoring in accordance with evaluation monitoringrequirements contained in the Regional Water Quality Control Board’s (RWQCB), Lahontan Region,Adopted Board Order No. 6-95-70A1, WDID No. 6B140300006 issued to the County of Inyo for theirLone Pine landfill.

1.1. Sampling Methodology

Discrete groundwater samples will be collected from each well (MW-1, MW-2, MW-3, MW-4, MW-5and MW-6) at the landfill on a quarterly frequency. The sampling will be conducted according tosampling protocol at locations shown on Figure 2.

Each sample will be collected using either decontaminated or dedicated sampling equipment. Sampleswill be collected into laboratory-supplied containers. Reusable sampling equipment will bedecontaminated between each sampling event. Decontamination will follow the procedures outlined inSection 1.9 of this Plan. Personnel who collect samples will be required to change their gloves betweeneach sampling location/event.

1.2. Sampling Equipment

The following equipment will be necessary to perform the sampling:

Disposable or stainless steel (SS) bailers Field log book

Sealable plastic bags Water Level Meter

An adequate amount of string to reach thebottom of each well

First aid kit and eye wash

Laboratory-supplied containers Water Quality Meter (pH,conductivity, temperature &turbidity)

5 gallons of de-ionized/distilled water Cooler and ice

Packing and duct tape

Chain of custody forms and custody seals Calculator

Nitrile Gloves Sample labels and markers

Level D health and safety equipment 2 submersible portable pumps

Decontamination equipment (2.5 gallon sprayer, non-phosphate detergent, disposablebrush, paper towels, cotton towels, polyethylene sheeting)

Lone Pine Landfill, Evaluation Monitoring Work Plan April 2009

Carlton Project No. 5616-04-082

1.3. Water Level Measurement Procedures

All groundwater depth measurements shall be made from the north side (surveyed reference point) of thetop of casing at each well. Prior to purging or sampling, the static groundwater level shall be measuredusing a water level meter, to the nearest 0.01 foot from the top of casing.

1.4. Well Purging

Three to five casing volumes will be purged from the well using a submersible pump or bailer.Measurement of field parameters, including pH, temperature, specific conductance, and turbidity, willoccur during pumping. Pumping will cease when 3 casing volumes are removed or when field parametermeasurements do not vary by more than 10 percent.

When it is not possible to purge 3 casing volumes, the well will be purged until recharge is too slow topractically continue. The well will be allowed to recover to 80 percent of the initial groundwater level atwhich point sampling can occur.

1.5. Monitoring and Record Keeping

A field logbook will be used to document the vital project and sample information. At a minimum, thefollowing sample information will be recorded:

Sample location and description Sampler’s name(s) Date and time of sample collection Type of sample (soil, sediment or water) Type of sampling equipment used Field instrument readings Field observations and details related to analysis or integrity of samples (e.g., weather conditions,

noticeable odors, colors, etc.) Preliminary sample descriptions Sample preservation Sample identification numbers and explanatory code Name of recipient laboratory Purge Data

In addition to the sampling information, the following specific information will also be recorded in thelogbook:

Team members and their responsibilities Time of arrival and departure Deviations from the sampling plan

Initially photographs will be taken at the sampling location and at surrounding areas. The photos willverify information entered in the field logbook. Each photo taken will be documented in the logbookwith the approximate time, date, and location.

1.6. Sampling



Groundwater samples will be collected using either decontaminated disposable bailers, or dedicatedequipment. To minimize the possibility of cross contamination, groundwater samples will first becollected at locations expected to be the least contaminated, proceeding last to areas of suspected orknown significant contamination. The string attached to the disposable bailers (if used) and loweredinto each well will be discarded after use to further minimize cross contamination.

One field duplicate sample will be collected simultaneously with a standard sample from the same sourceunder identical conditions into a separate sample container if required. The duplicated sample is treatedindependently of its counterpart in order to assess laboratory performance through comparison of theresults. The duplicate samples will be collected at a random location that demonstrates elevated levelsbased on field screening results.

If the well is evacuated before three casing volumes are removed, or stabilization is achieved, the sampleshould be collected when the water level in the well recovers to 80% of its initial level. Stabilized watertemperature and pH, plus observations of water quality, shall be recorded on the “Purge Characterizationand Sample Log” (attached at the end of this SAP).

1.7. Sample Containers and Preservation

Pre-cleaned containers will be supplied by the laboratory and will not be rinsed prior to samplecollection. Preservative will be added to the containers as appropriate by the laboratory. The laboratorysample containers shall only be filled once and sealed upon filling.

All samples collected will be labeled in a clear and precise way for proper identification for tracking inthe laboratory. Each sample label should include a sample identification number, job identification,sampler name, analysis, date, and time.

Samples will be preserved by sealing the containers in a plastic bag and placing them in a cooler withample ice, such that the temperature is kept at or below 4C.

1.8. Disposal of Residual Materials

In the process of collecting environmental samples at the site, the sampling team will generate differenttypes of potentially contaminated investigation-derived waste (IDW) that may include:

Used personal protective equipment (PPE) Disposable sampling equipment Decontamination fluids

The U.S. EPA’s National Contingency Plan requires management of IDW generated during samplingcomply with all applicable or relevant and appropriate requirements to the extent practicable. The IDWmay contain minor residual amounts of constituents of concern. These wastes are not consideredhazardous and will be disposed of at a municipal landfill. Used PPE and disposable equipment will bedouble bagged and placed in municipal refuse dumpster. Any PPE and disposable equipment that is to bedisposed of which can still be used will be rendered inoperable before disposal. Decontamination fluidsthat will be generated during sampling will consist of de-ionized water, residual contaminants, andwater with non-phosphate detergent. The volume and concentration of the decontamination fluid will besufficiently low to allow disposal at the site or sampling area. The water with detergent will disposed ofon site.



1.9. Decontamination Procedures

All equipment that comes into contact with potentially contaminated groundwater will bedecontaminated in a pre-designated area. Disposable equipment intended for one-time use will not bedecontaminated, but will be packaged for appropriate disposal. Decontamination will occur prior to andafter each use of a piece of equipment. All sampling devices used, including trowels and augers, will bedecontaminated prior to use.

The following decontamination procedures for the primary contaminants will be:

1. Non-phosphate detergent and tap-water (bottled water) wash, using a brush if necessary

2. Tap-water rinse

3. De-ionized/distilled water rinse 2x

1.10. Analytical Procedures

Each groundwater monitoring well will be field screened prior to, during and following purging activitiesin accordance with the SOPs herein. After field screening, the sample containers will be filled withgroundwater, capped, sealed and labeled (see packaging procedures), and sent to a California certifiedlaboratory, where discrete samples will be analyzed for the monitoring parameters listed below that arealso included in WDR Order No. 6-95-70A1 analytes list.

Parameter

volatile organic compounds

Notes: Prior to sampling, the groundwater monitoring wells shall be purged until the temperature, specificconductivity, and pH have stabilized to ensure representative samples.

Laboratory Quality Control

The analytical laboratory will perform Quality Control (QC). The QC will include project specific QC,method blank results, laboratory control spike, and matrix spike results.

A method blank is a laboratory-generated sample that assesses the degree to which laboratory operationsand procedures cause false-positive analytical results for the samples. The method blank resultsassociated with the samples will be included with the analytical results.

A Laboratory Control Spike (LCS) is a sample that is spiked with known analyte concentrations, andanalyzed at approximately 10 percent of the sample load in order to establish method-specific controllimits. The LCS results associated with the samples will be attached on the LCS and LCS DuplicateAnalysis Report.

A matrix spike is a sample that is spiked with a known analyte concentration and analyzed atapproximately 10 percent of the sample load in order to establish method-specific control limits. Thematrix spike results associated with the samples will be attached on the Matrix Spike and Matrix SpikeDuplicate Analysis Report.



Accuracy will be measured by percent recovery as defined by:

% recovery = (measured concentration) x 100(actual concentration)

1.11. Chain of Custody

A laboratory supplied Chain-of-Custody form (COC) will be completed and checked by the projectmanager prior to shipping to the laboratory.

1.12. Sample Handling and Transport

All sample containers will be placed in a sturdy shipping container and will have the drain plug sealed.Use ice to cool the samples packed in a double zip-lock bag. Special care will be provided to secure andprevent damage to the sample containers.

Samples should immediately be sent to the laboratory for analysis to meet required holding times. Shipvia courier or by next morning express service to ensure the samples arrive the morning followingsampling. This is necessary to ensure the hold-time remains within EPA time limits for analysis using astandard turn-around time.

Project Name: Project No.: Date:

Sampler: Weather Conditions: Top of Casing, Elev.

Well ID: Casing Diameter, in. Total Depth, ft.

Time

pH

Temperature (deg C)

Conductivity, μS/cm

Turbidity

Depth To Water, ft.

Volume Purged, gal.

Comments Purge Start Purge End

1 Well Vol.,gal

(Total Depth of Well: - Depth to Water: x Casing Factor: gal/well Vol. Gal. Per Foot of Casing: (4") 0.653 (2") 0.17

3 Well Volumes, gal. = 5 Well Volumes, gal. = Purge Method: Bailer

Total Volume Purged, gal. : No. of Well Volumes Purged: Purge Rate, gal./min. :

Sample No. Time Well ID.

Sample Method: Bailer

Comments:

Meter ID. Date Time

pH

Conductivity

Signature: Date:

INSTRUMENT CALIBRATION

Container No. of Containers

PURGE CHARACTERIZATION AND SAMPLE LOG

Chain of Custody No. :

SAMPLE INFORMATION

PURGE INFORMATION

Analysis To Be Run Preservation

Documents

Lone Pine Landfill, Evaluation Monitoring Work Plan … · Lone Pine Landfill, Evaluation Monitoring Work Plan June 2009 Carlton Project 5616-04-08 2 Boring logs from the 1989 drilling